因此,我正在尝试单击按钮打开网站链接,但由于某种原因其无法正常工作。我看过2020年的视频,对于那个工作过的家伙,但对我来说,这给了我错误,是错误的图片。
这是代码
import UIKit
class ContactViewController: UIViewController {
@IBAction func FB(_ sender: Any) {
}
@IBAction func YT(_ sender: Any) {
UIApplication.shared.open(URL(string: "www.google.com")!)
}
@IBAction func URL(_ sender: Any) {
}
@IBAction func CALL(_ sender: Any) {
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
我希望每个按钮仅链接一个名为CALL的CALL,以拥有一个电话号码并直接进入电话机。
编辑
答案 0 :(得分:0)
使用此代码代替强制转换
@IBAction func YT(_ sender: Any) {
if let url = URL(string: "www.google.com") {
UIApplication.shared.open(url)
} else {
print("url is not correct")
}
}
@IBAction func CALL(_ sender: Any) {
if let url = URL(string: "telprompt://\(phoneNumber)") {
let application = UIApplication.shared
guard application.canOpenURL(url) else {
return
}
application.open(url, options: [:], completionHandler: nil)
}
}
对于电子邮件导入MessageUI
import MessageUI
@IBAction func Email(_ sender: Any) {
if MFMailComposeViewController.canSendMail() {
let mail = MFMailComposeViewController()
mail.mailComposeDelegate = self
mail.setToRecipients(["you@yoursite.com"])
mail.setMessageBody("<p>You're so awesome!</p>", isHTML: true)
present(mail, animated: true)
} else {
// show failure alert
}
}